Musnad Abu Ya'la al-Mawsili 152:250

Abu Khaythama narrated to us, Abd al-Samad ibn Abd al-Warith narrated to us, Hammam narrated to us, Asim narrated to us, from Zirr, from Abdullah ibn Mas’ud: That the nations were presented to the Prophet, may Allah bless him and grant him peace, until his nation was presented, and their large number pleased him. It was said: "Indeed, with these are seventy thousand who will enter Paradise without reckoning."